A transitional form between fish and tetrapods, or four-limbed vertebrates.
Tiktaalik, fossil, extinct, prehistoric creature, Devonian period, evolution, aquatic lifestyle, terrestrial life, four-limbed, walking, animal, fish, vertebrates, biology
A prehistoric amphibian and an early representative of the Tetrapods, which became extinct 360 million years ago.
An extinct group of Cephalopoda, with solid external skeletons. They are excellent index fossils.
Long-necked herbivorous dinosaur with a robust body.
The axolotl, also known as Mexican salamander, is an amphibian species that keeps its gills even in adulthood.
This animation presents some animals and plants that lived between the Devonian and Permian periods (358-299 million years ago).
Deinonychus antirrhopus, the 'terrible claw', was a carnivorous dromaeosaurid dinosaur.
One of the largest marsupials.
This animation demonstrates the anatomy of amphibians through the example of a common species of frogs.
The last Ice Age ended about 13 thousand years ago.
The ‘upright man’ used tools and could set fire.
Fish-like marine dinosaurs which resembled dolphins; a good example of convergent evolution.
Eurypterids are an extinct group of Palaeozoic aquatic arthropods.
A prehistoric flying reptile, similar to birds. However, there is no direct evolutionary link between the two.
A type of prehistoric reptile having bony plates on its back, which aided thermoregulation.
Tectonic plates can move in relation to each other.
Large carnivores, perhaps the best known of dinosaurs.
A type of herbivorous dinosaur easily recognisable by its large frill and three horns which lived in the Cretaceous period.
The ancestors of Arachnida and Crustacea belonged to the class Trilobita.
During the evolution of vertebrates the relative development of brain areas has changed.
Living fossil, important stage in the evolution of tetrapods.
Extinct proboscidea closely related to today's elephants, often hunted by prehistoric man.
The Earth's continents have been in constant motion during the history of the planet.
The archaeopteryx shows characteristics of both birds and reptiles. It is probably the ancestor of birds.